I am going to use the urethane for a waterproof camera housing i am making. I figured it would be easier to make this than a machined housing with all the knobs and levers. Plus I am not diving, just keeping water out.

Yuri, did you get what you were looking for? I've got a few leading edges, as well as struts if someone else is looking. They're stock though, cabrinha and liquid force, I think among others, not airtime. I can stick one in the car for you, likely to be in Alameda this weekend.